指定进程的DumpHeap使用

最新推荐文章于 2023-11-10 21:04:22 发布

原创最新推荐文章于 2023-11-10 21:04:22 发布 · 263 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#java #开发语言

android11 ams 专栏收录该内容

10 篇文章

订阅专栏

该代码段展示了在Android中如何使用ActivityManagerShellCommand进行堆转储，针对进程com.example.test2生成heapdump文件，并等待转储完成。通过adbshell命令执行此操作，如果成功，会在/data/local/tmp目录下创建heapdump文件。

定义：com.android.server.am.ActivityManagerShellCommand#myRunDumpHeap

  int myRunDumpHeap(PrintWriter pw) throws RemoteException {
        final PrintWriter err = getErrPrintWriter();
        boolean managed = true;
        boolean mallocInfo = true;
        boolean runGc = true;

        String process = "com.example.test2";
        String heapFile = "/data/local/tmp/heapdump-" +process+ ".prof";

        pw.println("File: " + heapFile);
        pw.flush();

        File file = new File(heapFile);
        file.delete();
        ParcelFileDescriptor fd = openFileForSystem(heapFile, "w");
        if (fd == null) {
            return -1;
        }

        final CountDownLatch latch = new CountDownLatch(1);

        final RemoteCallback finishCallback = new RemoteCallback(new OnResultListener() {
            @Override
            public void onResult(Bundle result) {
                latch.countDown();
            }
        }, null);

        if (!mInterface.dumpHeap(process, UserHandle.USER_CURRENT, managed, mallocInfo, runGc, heapFile, fd,
                finishCallback)) {
            err.println("HEAP DUMP FAILED on process " + process);
            return -1;
        }
        pw.println("Waiting for dump to finish...");
        pw.flush();
        try {
            latch.await();
            pw.println("dump finished...");
        } catch (InterruptedException e) {
            err.println("Caught InterruptedException");
        }
        return 0;
    }